This is the Optics demo from Cross Educational Software.  The program
goes over lens and mirror problems, Snell's law, practical applications
of optics, and other basic concepts in optics.  The demo has simulations
of Snell's law with different n, a concave mirror for different object
distances, lenses that correct for chromatic aberation, two slit
interference patterns, and the lenses needed to correct for near and far
sighted eyes.

To run the program, type "opticdem" at the DOS prompt.

This program is shareware, and may be freely distributed.

In case of questions/problems contact:

Mark Cross
c/o Cross Educational Software
P.O.Box 1536 
508 E. Kentucky Avenue 
Ruston, LA  71270 
USA. 

Phone 318-255-8921 or 800-768-1969; voice or fax.  
24 hour phone support, but daylight hours are preferred.

Internet:  MarkCross@aol.com

To order the full version of the program, send $35 to the above address or order by phone.  VISA and Mastercard are accepted.   Please ask for item CR-310.
